package server

import (
	"encoding/json"
	"fmt"
	"memos/api"
	"memos/common"
	"net/http"
	"strconv"

	"github.com/labstack/echo/v4"
)

func (s *Server) registerMemoRoutes(g *echo.Group) {
	g.POST("/memo", func(c echo.Context) error {
		userId := c.Get(getUserIdContextKey()).(int)
		memoCreate := &api.MemoCreate{
			CreatorId: userId,
		}
		if err := json.NewDecoder(c.Request().Body).Decode(memoCreate); err != nil {
			return echo.NewHTTPError(http.StatusBadRequest, "Malformatted post memo request").SetInternal(err)
		}

		memo, err := s.MemoService.CreateMemo(memoCreate)
		if err != nil {
			return echo.NewHTTPError(http.StatusInternalServerError, "Failed to create memo").SetInternal(err)
		}

		c.Response().Header().Set(echo.HeaderContentType, echo.MIMEApplicationJSONCharsetUTF8)
		if err := json.NewEncoder(c.Response().Writer).Encode(memo); err != nil {
			return echo.NewHTTPError(http.StatusInternalServerError, "Failed to marshal memo response").SetInternal(err)
		}

		return nil
	})
	g.PATCH("/memo/:memoId", func(c echo.Context) error {
		memoId, err := strconv.Atoi(c.Param("memoId"))
		if err != nil {
			return echo.NewHTTPError(http.StatusBadRequest, fmt.Sprintf("ID is not a number: %s", c.Param("memoId"))).SetInternal(err)
		}

		memoPatch := &api.MemoPatch{
			Id: memoId,
		}
		if err := json.NewDecoder(c.Request().Body).Decode(memoPatch); err != nil {
			return echo.NewHTTPError(http.StatusBadRequest, "Malformatted patch memo request").SetInternal(err)
		}

		memo, err := s.MemoService.PatchMemo(memoPatch)
		if err != nil {
			return echo.NewHTTPError(http.StatusInternalServerError, "Failed to patch memo").SetInternal(err)
		}

		c.Response().Header().Set(echo.HeaderContentType, echo.MIMEApplicationJSONCharsetUTF8)
		if err := json.NewEncoder(c.Response().Writer).Encode(memo); err != nil {
			return echo.NewHTTPError(http.StatusInternalServerError, "Failed to marshal memo response").SetInternal(err)
		}

		return nil
	})
	g.GET("/memo", func(c echo.Context) error {
		userId := c.Get(getUserIdContextKey()).(int)
		memoFind := &api.MemoFind{
			CreatorId: &userId,
		}
		list, err := s.MemoService.FindMemoList(memoFind)
		if err != nil {
			return echo.NewHTTPError(http.StatusInternalServerError, "Failed to fetch memo list").SetInternal(err)
		}

		c.Response().Header().Set(echo.HeaderContentType, echo.MIMEApplicationJSONCharsetUTF8)
		if err := json.NewEncoder(c.Response().Writer).Encode(list); err != nil {
			return echo.NewHTTPError(http.StatusInternalServerError, "Failed to marshal memo list response").SetInternal(err)
		}

		return nil
	})
	g.GET("/memo/:memoId", func(c echo.Context) error {
		memoId, err := strconv.Atoi(c.Param("memoId"))
		if err != nil {
			return echo.NewHTTPError(http.StatusBadRequest, fmt.Sprintf("ID is not a number: %s", c.Param("memoId"))).SetInternal(err)
		}

		memoFind := &api.MemoFind{
			Id: &memoId,
		}
		memo, err := s.MemoService.FindMemo(memoFind)
		if err != nil {
			if common.ErrorCode(err) == common.NotFound {
				return echo.NewHTTPError(http.StatusNotFound, fmt.Sprintf("Memo ID not found: %d", memoId))
			}
			return echo.NewHTTPError(http.StatusInternalServerError, fmt.Sprintf("Failed to delete memo ID: %v", memoId)).SetInternal(err)
		}

		c.Response().Header().Set(echo.HeaderContentType, echo.MIMEApplicationJSONCharsetUTF8)
		if err := json.NewEncoder(c.Response().Writer).Encode(memo); err != nil {
			return echo.NewHTTPError(http.StatusInternalServerError, "Failed to marshal memo response").SetInternal(err)
		}

		return nil
	})
	g.DELETE("/memo/:memoId", func(c echo.Context) error {
		memoId, err := strconv.Atoi(c.Param("memoId"))
		if err != nil {
			return echo.NewHTTPError(http.StatusBadRequest, fmt.Sprintf("ID is not a number: %s", c.Param("memoId"))).SetInternal(err)
		}

		memoDelete := &api.MemoDelete{
			Id: &memoId,
		}

		err = s.MemoService.DeleteMemo(memoDelete)
		if err != nil {
			return echo.NewHTTPError(http.StatusInternalServerError, fmt.Sprintf("Failed to delete memo ID: %v", memoId)).SetInternal(err)
		}

		c.Response().Header().Set(echo.HeaderContentType, echo.MIMEApplicationJSONCharsetUTF8)
		c.Response().WriteHeader(http.StatusOK)

		return nil
	})
}